| 摘要 |
<p>A gear selector for use on an electrically assisted cycle includes a body which is arranged to be secured to the frame of the cycle. A lever is movable manually relative to the body and is arranged to be connected to the gear mechanism of the cycle whereby movement of the lever relative to the body causes operation of the gear mechanism to change the gear ratio. A cam is movable with the lever and a cam follower engages the cam and is moved thereby. An electrical switch carried by the body and operated by movement of the cam follower, and the cam is such that the cam follower is moved to operate the switch during any movement of the lever to effect a change in gear ratio. The cam is also such that the switch is returned to its initial operative condition after the movement which effects the gear change. In an electrically assisted cycle utilizing such a gear selector mechanism the switch controls energization of the electric motor such that the motor is not energized during gear change operations.</p> |
